199849386853 has 4 divisors (see below), whose sum is σ = 201717138240. Its totient is φ = 197981635468.

The previous prime is 199849386833. The next prime is 199849386859. The reversal of 199849386853 is 358683948991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199849386853 - 2¹³ = 199849378661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199849386859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933875533 + ... + 933875746.

It is an arithmetic number, because the mean of its divisors is an integer number (50429284560).

Almost surely, 2^199849386853 is an apocalyptic number.

It is an amenable number.

199849386853 is a deficient number, since it is larger than the sum of its proper divisors (1867751387).

199849386853 is a wasteful number, since it uses less digits than its factorization.

199849386853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867751386.

The product of its digits is 403107840, while the sum is 73.

The spelling of 199849386853 in words is "one hundred ninety-nine billion, eight hundred forty-nine million, three hundred eighty-six thousand, eight hundred fifty-three".